title: National trends in the use of antidepressants between 1997 and 2009 and the role of Medicare Part D implementation.
abstract: OBJECTIVE
  This study examined national trends in antidepressant use before and after implementation of Medicare Part D and compared utilization among individuals with different types of insurance.
  
  
  METHODS
  The data source was the Medical Expenditure Panel Survey Household Component (1997-2009), and logistic regression was used for the analysis.
  
  
  RESULTS
  The odds of antidepressant use among people with depression increased between 1997 and 2009 in each insurance group (Medicare: adjusted odds ratio [AOR]=3.30, 95% confidence interval [CI]=1.84-5.92; Medicaid: AOR=2.97, CI=2.01-4.40; dually eligible for Medicare and Medicaid: AOR=2.24, CI=1.11-4.54; and private coverage: AOR=6.63, CI=5.23-8.42). The odds of antidepressant use after implementation of Part D increased more among Medicare beneficiaries than among Medicaid beneficiaries (AOR=1.35, CI=1.05-1.72).
  
  
  CONCLUSIONS
  The use of antidepressants among people with depression increased in all insurance groups up to 2009; however, the patterns of utilization and the degree of increase over time differed by insurance type.
authors.forename: Dooyoung
authors.initials: D
authors.lastname: Lim
authors.forename: Kyoungrae
authors.initials: K
authors.lastname: Jung
authors.forename: Yunfeng
authors.initials: Y
authors.lastname: Shi
mesh_terms: D000928:Antidepressive Agents / Q000627:therapeutic use*; D003863:Depression / Q000188:drug therapy; D006801:Humans; D007348:Insurance, Health / Q000706:statistics & numerical data; D008484:Medicaid / Q000706:statistics & numerical data; D054524:Medicare Part D / Q000706:statistics & numerical data / Q000639:trends; D014481:United States
chemical_list: D000928:Antidepressive Agents